C

Cobalt(II) sulfate

IUPAC: cobalt(2+) sulfate

CoSO4 Salts CAS 10124-43-3
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Quick Reference
Formula / NotationCoSO4
CAS Number10124-43-3
Molecular Weight155.00
Melting Point735 °C
Density1.948 at 68 °F (USCG, 1999) - Denser than water; will sink
SolubilityOdorless; heat of solution: 23 BTU/lb= 13 cal/g= 0.54X10+5 J/kg; solubility: 35.040 lb/100 lb water at 70 °F /Cobaltous sulfate heptahydrate/
AppearanceCobalt sulfate is an odorless rose-pink solid. Sinks and mixes with water. (USCG, 1999)
Also Known Ascobalt(2+) sulfate; Cobalt sulfate; Cobaltous sulfate; Cobalt(2+) sulfate; 10124-43-3; Cobalt Brown; Cobalt monosulfate; Cobalt(II) sulphate; Cobalt (2+) sulfate; Cobalt sulfate (1:1)
CategorySalts

What is Cobalt(II) sulfate?

Cobalt(2+) sulfate is a compound of cobalt and sulfate in which the ratio of cobalt (+2 oxidation state) to sulfate is 1:1. It contains a cobalt(2+).

Formula & Notation

CoSO4

IUPAC Name: cobalt(2+) sulfate

Other Names / Synonyms: cobalt(2+) sulfate; Cobalt sulfate; Cobaltous sulfate; Cobalt(2+) sulfate; 10124-43-3; Cobalt Brown; Cobalt monosulfate; Cobalt(II) sulphate; Cobalt (2+) sulfate; Cobalt sulfate (1:1)

Properties & Characteristics

Appearance: Cobalt sulfate is an odorless rose-pink solid. Sinks and mixes with water. (USCG, 1999). Molecular formula: CoO4S. Molecular weight: 155.00 g/mol. Melting point: 735 °C. Density: 1.948 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: Odorless; heat of solution: 23 BTU/lb= 13 cal/g= 0.54X10+5 J/kg; solubility: 35.040 lb/100 lb water at 70 °F /Cobaltous sulfate heptahydrate/.

Physical Data

PropertyValue
Melting Point735 °C
Density1.948 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight155.00
SolubilityOdorless; heat of solution: 23 BTU/lb= 13 cal/g= 0.54X10+5 J/kg; solubility: 35.040 lb/100 lb water at 70 °F /Cobaltous sulfate heptahydrate/
AppearanceCobalt sulfate is an odorless rose-pink solid. Sinks and mixes with water. (USCG, 1999)

Uses & Applications

Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.

Safety Information

Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Cobalt(II) sulfate
Formula CoSO4
CAS Number 10124-43-3
Molecular Weight 155.00
Category Salts
Index All "C" terms
Synonyms cobalt(2+) sulfate; Cobalt sulfate; Cobaltous sulfate; Cobalt(2+) sulfate; 10124-43-3; Cobalt Brown; Cobalt monosulfate; Cobalt(II) sulphate; Cobalt (2+) sulfate; Cobalt sulfate (1:1)

Frequently Asked Questions

Cobalt(2+) sulfate is a compound of cobalt and sulfate in which the ratio of cobalt (+2 oxidation state) to sulfate is 1:1. It contains a cobalt(2+).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.

AllChemicals.info — The Online Chemical Glossary | https://allchemicals.info/chemical/cobalt-ii-sulfate

For educational purposes only. Verify all information before use.